SOLUTION: add (5x^2-xy+y^2)+(-x^2-7xy+9y^2)
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Question 266386: add (5x^2-xy+y^2)+(-x^2-7xy+9y^2)
Answer by user_dude2008(1862) (Show Source): You can put this solution on YOUR website!
(5x^2-xy+y^2)+(-x^2-7xy+9y^2) = 4x^2 - 8xy +10y^2
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